<template>
    <div>
        <div style="margin: 10px 0">
            <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search"
                      v-model="name"></el-input>

            <el-button class="ml-5" type="primary" @click="load">搜素</el-button>
            <el-button class="ml-5" type="warning" @click="reset">重置</el-button>
        </div>
        <div style="margin: 10px 0">
            <el-button type="primary" @click="handleAdd">新增<i class="el-icon-circle-plus-outline"></i>
            </el-button>
            <el-popconfirm
                    class="ml-5"
                    confirmButtonText='确定'
                    cancelButtonText='我再想想'
                    icon="el-icon-info"
                    iconColor="red"
                    title="您确定批量删除这些数据吗？"
                    @confirm="delBatch ">
                <el-button type="danger" slot="reference">批量删除<i class="el-icon-remove-outline"></i></el-button>
            </el-popconfirm>
        </div>

        <el-table :data="tableData" border stripe :header-cell-class-name="headerBg"
                  @selection-change="handleSelectionChange">
            <el-table-column type="selection" width="55"></el-table-column>
            <el-table-column prop="id" label="ID" width="80">
            </el-table-column>
            <el-table-column prop="name" label="名称" width="90">
            </el-table-column>
            <el-table-column prop="description" label="描述">
            </el-table-column>
            <el-table-column prop="flag" label="唯一标识">
            </el-table-column>
            <el-table-column label="操作" width="270">
                <template slot-scope="scope">
                    <el-button type="info" @click="selectMenu(scope.row)">分配菜单<i class="el-icon-menu"></i></el-button>
                    <el-button type="success" @click="handleEdit(scope.row)">编辑<i class="el-icon-edit"></i></el-button>
                    <el-popconfirm
                            class="ml-5"
                            confirmButtonText='确定'
                            cancelButtonText='我再想想'
                            icon="el-icon-info"
                            iconColor="red"
                            title="您确定删除吗？"
                            @confirm="del(scope.row.id)"
                    >
                        <el-button type="danger" slot="reference">删除<i class="el-icon-remove-outline"></i></el-button>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>
        <div style="padding: 10px 0">
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="pageNum"
                    :page-sizes="[5, 10, 15, 20]"
                    :page-size="pageSize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total"
            >
            </el-pagination>
        </div>
        <!-- Form -->
        <el-dialog title="角色信息" :visible.sync="dialogFormVisible" width="30%">
            <el-form label-width="80px" size="small">

                <el-form-item label="名称">
                    <el-input v-model="form.name" autocomplete="off"></el-input>
                </el-form-item>
                <el-form-item label="描述">
                    <el-input v-model="form.description" autocomplete="off"></el-input>
                </el-form-item>
                <el-form-item label="唯一标识">
                    <el-input v-model="form.flag" autocomplete="off"></el-input>
                </el-form-item>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button @click="dialogFormVisible = false">取 消</el-button>
                <el-button type="primary" @click="save">确 定</el-button>
            </div>
        </el-dialog>

        <el-dialog title="菜单分配" :visible.sync="menuDialogVisible" width="30%">
            <el-tree
                    :props="props"
                    :data="menuData"
                    show-checkbox
                    ref="tree"
                    node-key="id"
                    :default-expanded-keys="expands"
                    :default-checked-keys="checks">
                <!-- @check-change="handleCheckChange"-->

                <span class="custom-tree-node" slot-scope="{node,data }">
                <span><i :class="data.icon"></i> {{data.name}}</span>
                </span>
            </el-tree>

            <div slot="footer" class="dialog-footer">
                <el-button @click="menuDialogVisible = false">取 消</el-button>
                <!--<el-button type="primary" @click="save">确 定</el-button>-->
                <el-button type="primary" @click="saveRoleMenu">确 定</el-button>

            </div>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        name: "User",
        data() {
            return {
                tableData: [],
                total: 0,
                pageNum: 1,
                pageSize: 10,
                name: "",
                description: "",
                dialogFormVisible: false, /*默认不展示*/
                menuDialogVisible: false,
                form: {},
                multipleSelection: [],
                headerBg: 'headerBg',
                props: {
                    label: "name",/*把name映射到label上去*/
                },
                expands: [],
                checks: [],
                roleId: 0,
                roleFlag: '',

                menuData: [
                    /*{id: 1, label: '主页',},
                    {
                    id: 2,
                    label: '系统管理',
                    children: [{
                        id: 3,
                        label: '用户管理',
                        children: [{id: 9, label: '三级 1-1-1'},
                                    {id: 10, label: '三级 1-1-2'}]},{
                        id: 4,
                        label: '角色管理',
                        children: [{id: 9, label: '三级 1-1-1'},
                            {id: 10, label: '三级 1-1-2'}]},{
                        id: 5,
                        label: '菜单管理',
                        children: [{id: 9, label: '三级 1-1-1'},
                            {id: 10, label: '三级 1-1-2'}]},{
                        id: 6,
                        label: '文件管理',
                        children: [{id: 9, label: '三级 1-1-1'},
                            {id: 10, label: '三级 1-1-2'}]}
                            ]},*/]
            }
        },
        created() {//加载时触发
            /* //请求分页查询数据
             fetch("http://localhost:8081/user/page?pageNum=" + this.pageNum + "&pageSize=" + this.pageSize).then(res => res.json()).then(res => {
                 console.log(res);
                 this.tableData = res.data;
                 this.total = res.total;
             })*/
            this.load();

        },
        methods: {
            load() {
                /*request.get("http://localhost:8081/user/page?pageNum=" + this.pageNum + "&pageSize=" + this.pageSize+"&username="+this.username).then(res=>{*/
                this.request.get("/role/page", {
                    params: {
                        pageNum: this.pageNum,
                        pageSize: this.pageSize,
                        name: this.name,
                        description: this.description,
                    }
                }).then(res => {
                    console.log(res);
                    //解析数据
                    this.tableData = res.data.records;
                    this.total = res.data.total;
                })
                /*//请求分页查询数据
                fetch("http://localhost:8081/user/page?pageNum=" + this.pageNum + "&pageSize=" + this.pageSize+"&username="+this.username).then(res => res.json()).then(res => {
                    console.log(res);
                    this.tableData = res.data;
                    this.total = res.total;
                })*/


            },
            reset() {
                this.name = "";
                this.description = "";
                this.load();
            },
            handleAdd() {
                //打开弹窗
                this.dialogFormVisible = true;
                this.form = {};

            },
            save() {
                this.request.post("/role", this.form
                ).then(res => {
                    if (res.code === '200') {
                        this.$message.success("保存成功");
                        this.dialogFormVisible = false;//关闭弹窗
                        this.load();
                    } else {
                        this.$message.error("保存失败")
                    }
                });
            },
            saveRoleMenu() {
                /*console.log(this.$refs.tree.getCheckedKeys());//获取的是对象数组
                console.log(this.$refs.tree.getCheckedNodes());//获取的是id数组*/
                this.request.post("/role/roleMenu/" + this.roleId, this.$refs.tree.getCheckedKeys()).then(res => {
                    console.log(res)
                    if (res.code === '200') {
                        this.$message.success("绑定成功")
                        this.menuDialogVisible = false
                        //操作管理员角色后需要重新登录
                        if (this.roleFlag === 'ROLE_ADMIN') {
                            this.$store.commit("logout")
                        }

                    } else {
                        this.$message.error(res.msg)
                    }
                })
            },
            handleEdit(row) {
                this.form = row;//将次行的数据付给表单
                this.dialogFormVisible = true;
                this.form = JSON.parse(JSON.stringify(row))  //可以解决编辑未确认就改变的问题
                // this.form = Object.assign({},row)  //将row拷贝到空对象中 解决没点确定数据改变的问题
            },
            del(id) {
                this.request.delete("/role/" + id).then(res => {
                    if (res.code === '200') {
                        this.$message.success("删除成功");
                        this.dialogFormVisible = false;//关闭弹窗
                        this.load();
                    } else {
                        this.$message.error("删除失败")
                    }
                })
            },
            handleSelectionChange(val) {
                // console.log(val);
                this.multipleSelection = val;
            },
            delBatch() {
                let ids = this.multipleSelection.map(v => v.id)  //扁平化处理:将对象的数组[{},{},{}]==>处理成类似于[1,2,3]这样纯id的数组
                this.request.post("/role/del/batch", ids).then(res => {
                    if (res.code === '200') {
                        this.$message.success("批量删除成功");
                        this.dialogFormVisible = false;//关闭弹窗
                        this.load();
                    } else {
                        this.$message.error("批量删除失败")
                    }
                })
            },
            handleSizeChange(pageSize) {
                // console.log(pageSize);
                this.pageSize = pageSize;
                this.load();
            },
            handleCurrentChange(pageNum) {
                // console.log(pageNum);
                this.pageNum = pageNum;
                this.load();
            },
            async selectMenu(role) {
                // console.log(roleId);
                this.menuDialogVisible = true;
                this.roleId = role.id;
                this.roleFlag = role.flag;
                //请求菜单数据
                this.request.get("/menu").then(res => {
                    // console.log(res);
                    //解析数据
                    this.menuData = res.data;

                    //把后台返回的菜单数据处理成id数组
                    this.expands = this.menuData.map(v => v.id)
                }),

                    this.request.get("/role/roleMenu/" + this.roleId).then(res => {
                        //console.log(res);
                        /*//先渲染弹窗里的元素，然后再setChecked
                        this.menuDialogVisible=true;*/
                        //解析数据
                        this.checks = res.data
                        this.ids.forEach(id=>{
                            if(!this.checks.includes(id)){
                                this.$nextTick(()=>{
                                    this.$refs.tree.setChecked(id,false)
                                })

                            }
                        })
                        this.menuDialogVisible=true;
                    })
            },
            /*handleCheckChange(menuData, checked, indeterminate) {
                console.log(menuData, checked, indeterminate);
            },*/
        }
    }
</script>

<style>
    .headerBg {
        background: #eee !important;
    }
</style>